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//import scala.concurrent._
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//import scala.concurrent.duration._
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//import ExecutionContext.Implicits.global
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//import scala.language.postfixOps
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//import scala.language.reflectiveCalls
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//lazy val f = Future {
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import CW8a._
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val EVIL_urban = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))
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//println("1")
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assert(ders(List.fill(5)('a'), EVIL_urban) == SEQ(SEQ(STAR(CHAR('a')),STAR(STAR(CHAR('a')))),CHAR('b')))
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//println("2")
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assert(ders(List('b'), EVIL_urban) == ONE)
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//println("3")
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assert(ders(List('b','b'), EVIL_urban) == ZERO)
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//println("4")
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assert(matcher(EVIL_urban, "a" * 5 ++ "b") == true)
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//println("5")
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assert(matcher(EVIL_urban, "b") == true)
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//println("6")
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assert(matcher(EVIL_urban, "bb") == false)
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//println("7")
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assert(matcher("abc", "abc") == true)
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//println("8")
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assert(matcher(("ab" | "a") ~ (ONE | "bc"), "abc") == true)
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//println("9")
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assert(matcher(ONE, "") == true)
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//println("10")
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assert(matcher(ZERO, "") == false)
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//println("11")
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assert(matcher(ONE | CHAR('a'), "") == true)
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//println("12")
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assert(matcher(ONE | CHAR('a'), "a") == true)
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//}
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//Await.result(f, 90 second)
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